Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |
Feb. 07, 2017 |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|---|
| Equity [Abstract] | |||
| Preferred stock, shares authorized | 10,000,000 | 10,000,000 | |
| Preferred stock, par value | $ 0.0001 | $ 0.0001 | |
| Common stock, shares authorized | 100,000,000 | 100,000,000 | |
| Common stock, par value | $ 0.0001 | $ 0.0001 | |
| Shares of common stock issued | 5,181,348 | ||
| Common stock offering price | $ 1.93 | ||
| Net proceeds from public offering | $ 9.2 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|